$.ajax({
    url: $("#basePath").val()+"/ajax.form?key=autocomplete",
    dataType: "json",
    success: function(data) {
    	$( "#dnaName" ).autocomplete({
    		  source:data.dnaName
    	});
    	$( "#dnaCoder" ).autocomplete({
  		  source:data.dnaCoder
    	});
    	$( "#dnaSource" ).autocomplete({
  		  source:data.dnaSource
    	});
    },
});
var options = { 
 //       target:        '#output2',   // target element(s) to be updated with server response 
        beforeSubmit:  showRequest,  // pre-submit callback 
        success:       showResponse , // post-submit callback 
        // other available options: 
        url:$("#basePath").val()+$('#cornSelectMbForm').attr("action")         // override for form's 'action' attribute 
        //type:      type        // 'get' or 'post', override for form's 'method' attribute 
        //dataType:  null        // 'xml', 'script', or 'json' (expected server response type) 
        //clearForm: true        // clear all form fields after successful submit 
        //resetForm: true        // reset the form after successful submit 
 
        // $.ajax options can be used here too, for example: 
        //timeout:   3000 
}; 
$('#cornSelectMbForm').ajaxForm(options);

//pre-submit callback 
function showRequest(formData, jqForm, options) { 
	var file = $("#mb-file").val();
	if(file==null||file==''){
		alert("请选择样品execl");
		return;
	}else{
		var ext = file.slice(file.lastIndexOf(".")+1).toLowerCase();
		if ("xls" != ext && "xlsx" != ext) {  
	        alert("只能上传Excle文件");  
	        return;  
		}  
	}
	
    // formData is an array; here we use $.param to convert it to a string to display it 
    // but the form plugin does this for you automatically when it submits the data 
    var queryString = $.param(formData); 
 
    // jqForm is a jQuery object encapsulating the form element.  To access the 
    // DOM element for the form do this: 
    // var formElement = jqForm[0]; 
 
 //   alert('About to submit: \n\n' + queryString); 
 
    // here we could return false to prevent the form from being submitted; 
    // returning anything other than false will allow the form submit to continue 
    return true; 
} 
 
// post-submit callback 
function showResponse(responseText, statusText)  { 
    // for normal html responses, the first argument to the success callback 
    // is the XMLHttpRequest object's responseText property 
 
    // if the ajaxSubmit method was passed an Options Object with the dataType 
    // property set to 'xml' then the first argument to the success callback 
    // is the XMLHttpRequest object's responseXML property 
 
    // if the ajaxSubmit method was passed an Options Object with the dataType 
    // property set to 'json' then the first argument to the success callback 
    // is the json data object returned by the server 
	
  //  alert('status: ' + statusText + '\n\nresponseText: \n' + responseText + 
  //     '\n\nThe output div should have already been updated with the responseText.');
	try{
		var v = eval(responseText);
		if(v[0] && v[0].error){
			alert(v[0].error);
		}
	}catch(e){
		addTab_('corn-select-result','corn-select-result',responseText,"查询结果",true,true);
	}
} 